E-Class (W211) 2003-2009

Keyless go battery

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Old Dec 30, 2007 | 03:03 PM
  #1  
pogotango's Avatar
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e500
Keyless go battery

when i start my car with keyless go, it says a malfunction of "key, check battery"

do i have to take my car to the dealer...

when i start my car with the key in the hole, its fine.
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Old Dec 30, 2007 | 03:26 PM
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Buy new batteries. How to replace them is listed on the forum as well as in your manual.
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Old Dec 30, 2007 | 03:52 PM
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yeah , you can find new batteries at radio shack or target, etc. They're pretty common batteries. Do a quick search for "Remote Batteries" on the forum for more information.
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Old Jan 1, 2008 | 07:00 PM
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e500
ty very much

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Old Jan 3, 2008 | 06:00 AM
  #5  
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my batteries last me about 3 months only. It sucks. Before there's a warning, I can't even open my doors.
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Old Jan 3, 2008 | 10:19 AM
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Originally Posted by brabusw209amg
my batteries last me about 3 months only. It sucks. Before there's a warning, I can't even open my doors.
My Keyless Go batteries last well over a year.

Last edited by Barry45RPM; Jan 3, 2008 at 02:18 PM.
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Old Jan 3, 2008 | 11:47 AM
  #7  
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07 SL55 P30 Designo - Sold, 06 E55 Wagon, 04 CLK55A - sold
I had the same warning on the e55 Wagon I just bought. Was told that the keyless go batteries wear out a lot faster than on non-kg remotes. A salesguy put in the new batteries, but it didn't seem to "synch" with the car when I used it for the first time. All ok now after taking it back.
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Old Jan 3, 2008 | 04:31 PM
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Originally Posted by Barry45RPM
My Keyless Go batteries last well over a year.
Having replaced mine two weeks from new (with GE/SANYO), I have been on the same set for the last 5 months. I keep a spare set, just in case.
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